This fantastic coloured sleeve accessory has been designed to suit 3 foot LED T8 tubes that are the standard diameter of 32mm. It offers an economic easy way to alter the light output of your existing LED tubes by sliding a coloured insert and clear tube over your light this is a great solution for changing the way a space looks using your existing installation. Once installed this beautiful product will allow your light to produce a Rosco code 170 deep lavender colour light giving an immediate effect making it great for events and parties. Please be aware that this product is not suitable for T8 or T12 fluorescent tubes and does not require end caps.